EP3382202B1 - Tube pump and holding mechanism - Google Patents
Tube pump and holding mechanism Download PDFInfo
- Publication number
- EP3382202B1 EP3382202B1 EP18155218.3A EP18155218A EP3382202B1 EP 3382202 B1 EP3382202 B1 EP 3382202B1 EP 18155218 A EP18155218 A EP 18155218A EP 3382202 B1 EP3382202 B1 EP 3382202B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- axis line
- pair
- holding
- drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000002093 peripheral effect Effects 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 29
- 238000006073 displacement reaction Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000002572 peristaltic effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
- F04B43/082—Machines, pumps, or pumping installations having flexible working members having tubular flexible members the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/247—Positive displacement blood pumps
- A61M60/253—Positive displacement blood pumps including a displacement member directly acting on the blood
- A61M60/268—Positive displacement blood pumps including a displacement member directly acting on the blood the displacement member being flexible, e.g. membranes, diaphragms or bladders
- A61M60/279—Peristaltic pumps, e.g. roller pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
- F04B43/0072—Special features particularities of the flexible members of tubular flexible members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
- F04B43/086—Machines, pumps, or pumping installations having flexible working members having tubular flexible members with two or more tubular flexible members in parallel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/1238—Machines, pumps, or pumping installations having flexible working members having peristaltic action using only one roller as the squeezing element, the roller moving on an arc of a circle during squeezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
Definitions
- the present invention relates to a tube pump and a holding mechanism.
- a rotary shaft to which one pressing element is connected is projected upward, and a rotary shaft to which the other pressing element is connected is projected downward.
- the pump disclosed in PTL 1 is configured such that drive forces of a pair of electric motors are respectively transmitted to the rotary shafts, which project upward and downward, through a pair of reducers so that the pair of pressing elements are rotated at non-constant velocities thus displacing the liquid by small pulsation.
- the pump disclosed in PTL 1 includes a drum having an arcuate inner peripheral surface and a tube disposed on the inner peripheral surface of the drum.
- the pump is configured such that the rotary shafts connected to the pair of pressing elements and a drive mechanism for driving the rotary shafts project upward and downward from the drum.
- EP 3061473 A1 discloses a peristaltic pump with variable angle pressure rollers, wherein the low-pressure side pressure and the high-pressure side pressure are sensed, a pressure difference is formed and angular positioning of pinch elements relative to each other is performed is performed depending on said angular difference.
- WO 2011/057663 A1 discloses a hose cartridge for removably mounting a hose on a peristaltic pump comprising a roller wheel for pumping a fluid through said hose, said hose cartridge substantially describing a closed loop encircling an opening through which said roller wheel extends when the hose cartridge is mounted on a peristaltic pump.
- the drive mechanism and the like are disposed above and below the drum where the tube is disposed on the inner peripheral surface of the drum. Accordingly, the tube disposed on the inner peripheral surface of the drum cannot be easily replaced.
- the present invention has been made under such circumstances, and it is an object of the present invention to provide a tube pump where each of a pair of contact members, which rotate while being in contact with a tube, can be rotated independently, and the tube can be easily replaced.
- the present invention employs the following solutions, namely a tube pump according to claim 1 and a holding mechanism according to claim 5.
- a tube pump which includes: a drive mechanism including a pair of contact members configured to rotate about an axis line while being in contact with a tube having elasticity, and a pair of drive units configured to cause the pair of contact members to rotate independently about the axis line; a holding mechanism configured to hold the tube in an arcuate shape about the axis line; and an attachment mechanism configured to detachably attach the holding mechanism to the drive mechanism, wherein the holding mechanism is configured to be detachably attached to a drive mechanism including a pair of contact members which rotate about an axis line X1 while being in contact with a tube having elasticity, the holding mechanism comprises a holding portion on which an inner peripheral surface is formed, the holding portion holding the tube in an arcuate shape about the axis line X1; and a pair of fixing portions configured to house and fix a pair of positioning members attached to an outer peripheral surface of the tube, wherein the inner peripheral surface is formed in a range larger than 180 degrees about the axis line
- the drive mechanism includes the pair of contact members and the pair of drive units. Accordingly, the pair of contact members, which rotate while being in contact with the tube held by the holding mechanism in an arcuate shape about the axis line, can be independently rotated about the axis line.
- the holding mechanism is detachably attached to the drive mechanism by the attachment mechanism so that the tube can be easily replaced.
- the tube pump according to one aspect of the prevent invention may be configured such that the tube pump further includes a control unit configured to control the pair of drive units, wherein the control unit is capable of performing a first control mode where the pair of contact members are rotated in the same direction so as to convey a liquid in the tube, and a second control mode where positions of the pair of contact members disposed about the axis line are respectively fixed so as to prevent the pair of contact members from coming into contact with the tube.
- the pair of contact members can be fixed so as to prevent a contact with the tube. Accordingly, in attaching the holding mechanism to the drive mechanism by the attachment mechanism, the holding mechanism can be easily and reliably attached to the drive mechanism while preventing the tube from coming into contact with the pair of contact members. Further, by performing the first control mode after the holding mechanism is attached to the drive mechanism by the attachment mechanism, a liquid in the tube can be conveyed.
- the attachment mechanism may include: a housing mechanism configured to house the holding mechanism; and an advancing and retracting mechanism configured to advance and retract the housing mechanism along the axis line, and the advancing and retracting mechanism may be a mechanism capable of changing over a state of the tube pump between a mounting state where the tube and the pair of contact members are disposed at the same position an the axis line and a separated state where the holding mechanism is disposed at a position separated from the drive mechanism by a distance.
- the holding mechanism which is housed in the housing mechanism is made to advance and retract along the axis line by the advancing and retracting mechanism.
- control unit may be configured to control the advancing and retracting mechanism so as to change over a state of the tube pump between the mounting state and the separated state, and the control unit may be configured to perform the second control mode in changing over the state of the tube pump from the separated state to the mounting state.
- the second control mode is performed by the control unit so that the pair of contact members are fixed at the position where the pair of contact members do not come into contact with the tube. Thereafter, the state of the tube pump is changed over from the separated state to the mounting state. Accordingly, in attaching the holding mechanism to the drive mechanism, an Operator is required to perform only a relatively simple operation, that is, to house the holding mechanism in the housing mechanism.
- a holding mechanism configured to be detachably attached to a drive mechanism including a pair of contact members which rotate about an axis line while being in contact with a tube having elasticity
- the holding mechanism including: a holding portion an which an inner peripheral surface is formed, the holding portion holding the tube in an arcuate shape about the axis line; and a pair of fixing portions configured to house and fix a pair of positioning members attached to an outer peripheral surface of the tube, wherein the inner peripheral surface is formed in a range larger than 180 degrees about the axis line, wherein the holding portion is formed into a cylindrical shape, and one end of the holding portion in a direction of the axis line is closed and the other end of the holding portion in the direction of the axis line is opened.
- the inner peripheral surface of the holding mechanism is formed in a range large than 180 degrees about the axis line. Accordingly, when the tube is disposed along the inner peripheral surface of the holding portion, the tube comes into contact with the arcuate inner peripheral surface of the holding portion with a distance longer than a half of a circumference of an arcuate shape of the inner peripheral surface.
- a range where the contact members come into contact with the tube increases. Therefore, along with the increase in such a range, an amount of a liquid which is sandwiched between the pair of contact members increases. The larger an amount of the liquid becomes, the more an increase amount of pressure of a liquid which can be increased by the tube pump increases so that pulsing of a liquid can be properly controlled.
- the holding portion is formed into a cylindrical shape, and one end of the holding portion in a direction of the axis line is closed and the other end of the holding portion in the direction of the axis line is opened.
- One end of the holding portion is closed so that a problem such as damage of the tube carelessly caused by an operator can be suppressed.
- the other end of the holding portion is opened so that the holding mechanism can be attached to the drive mechanism.
- each of a pair of contact members which rotate while being in contact with a tube, can be rotated independently, and the tube can be easily replaced.
- the tube pump 500 of this embodiment is an apparatus where a first roller unit 10 (first contact member) and a second roller unit 20 (second contact member) are rotated in the same direction about an axis line X1 so that a fluid which flows into a tube 220 from an inflow side 220a and is in the tube 220 is displaced to an outflow side 220b.
- the tube pump 500 of this embodiment includes: a drive mechanism 100 for driving the first roller unit 10 and the second roller unit 20; a holding mechanism 200 for holding the tube 220; an attachment mechanism 300 for detachably attaching the holding mechanism 200 to the drive mechanism 100; and a control unit 400 not shown in the drawing.
- a drive mechanism 100 for driving the first roller unit 10 and the second roller unit 20
- a holding mechanism 200 for holding the tube 220
- an attachment mechanism 300 for detachably attaching the holding mechanism 200 to the drive mechanism 100
- a control unit 400 not shown in the drawing.
- the drive mechanism 100 in this embodiment includes: the first roller unit 10 and the second roller unit 20 which rotate about an axis line X1 while being in contact with the tube 220; a drive shaft 30 which is disposed on the axis line X1, and is connected to the first roller unit 10; a drive cylinder 40 which is connected to the second roller unit 20; a first drive unit 50 which transmits a drive force to the drive shaft 30; and a second drive unit 60 which transmits a drive force to the drive cylinder 40.
- the first roller unit 10 includes: a first roller 11 which rotates about an axis line extending parallel to the axis line X1 while the first roller 11 is in contact with the tube 220; a first roller support member 12 which is connected to the drive shaft 30 so as to integrally rotate with the drive shaft 30 about the axis line X1; and a first roller shaft 13 which has both end portions thereof supported by the first roller support member 12, and to which the first roller 11 is rotatably attached.
- the second roller unit 20 includes: a second roller 21 which rotates about an axis line extending parallel to the axis line X1 while the second roller 21 is in contact with the tube 220; a second roller support member 22 which is connected to the drive cylinder 40 so as to integrally rotate with the drive cylinder 40 about the axis line X1; and a second roller shaft 23 which has both end portions thereof supported by the second roller support member 22, and to which the second roller 21 is rotatably attached.
- the first drive unit 50 includes a first electric motor 51 and a power transmission mechanism 52.
- the first drive unit 50 transmits a rotational force of the first electric motor 51 to the drive shaft 30 through the power transmission mechanism 52.
- the first roller unit 10 rotates about the axis line X1 along with the rotation of the drive shaft 30.
- the second drive unit 60 includes: a second electric motor 61; a drive pulley 62; a driven pulley 63; and a belt 64.
- the second drive unit 60 transmits a rotational force of the second electric motor 61 to the drive pulley 62 so as to cause the belt 64 to rotate about the axis line X1.
- a rotational force of the belt 64 is transmitted to an outer peripheral surface of the driven pulley 63.
- an inner peripheral surface of the driven pulley 63 is fixed to an outer peripheral surface of the drive cylinder 40. Accordingly, the rotational force of the belt 64 is transmitted from the driven pulley 63 to the drive cylinder 40.
- the drive cylinder 40 is disposed on the outer peripheral side of the drive shaft 30 with a bearing member 31 interposed between the drive cylinder 40 and the drive shaft 30. Accordingly, the drive cylinder 40 can rotate about the axis line X1 independently from the drive shaft 30.
- the drive shaft 30 rotates about the axis line X1 by a drive force caused by the first drive unit 50.
- the drive cylinder 40 rotates about the axis line X1 by a drive force caused by the second drive unit 60 independently from the drive shaft 30.
- the second roller support member 22 of the second roller unit 20 is connected to the distal end side of the drive cylinder 40 so as to rotate integrally with the drive cylinder 40 about the axis line X1. Accordingly, the second roller unit 20 rotates about the axis line X1 along with the rotation of the drive cylinder 40.
- Fig. 4 is a view showing a control configuration of the tube pump 500 of this embodiment.
- a flow rate of a fluid displaced from the tube 220 held by the holding mechanism 200 is measured by a flowmeter 600, and the control unit 400 receives the measured result.
- the control unit 400 controls the drive mechanism 100 based on the received measured result such that a flow rate of a liquid measured by the flowmeter 600 assumes a desired flow rate.
- the flowmeter 600 may be incorporated into the tube pump 500 as a part of the tube pump 500. Alternatively, the flowmeter 600 may be a device separated from the tube pump 500.
- a control signal for controlling the first drive unit 50 and the second drive unit 60 of the drive mechanism 100 is transmitted from the control unit 400 to the drive mechanism 100.
- the drive mechanism 100 may be formed as a mechanism into which the control unit 400 is incorporated.
- the control unit 400 incorporated into the drive mechanism 100 generates a control signal for controlling the first drive unit 50 and the second drive unit 60, and transmits the control signal to the first drive unit 50 and the second drive unit 60.
- the holding mechanism 200 includes: a tube case (holding portion) 210; the tube 220; and a pair of tube pressing rings 230 (positioning members).
- the tube case 210 has: an inner peripheral surface 211 which holds the tube 220 in an arcuate shape about the axis line X1; a pair of projections 212 which are housed in a housing mechanism 310 of the attachment mechanism 300 described later; and a pair of fixing holes 213 for housing and fixing the pair of tube pressing rings 230.
- the tube case 210 is formed into a substantially cylindrical shape about the axis line X1.
- the tube case 210 has a shape where one end of the tube case 210 on the front side in the direction of the axis line X1 is closed, and the other end of the tube case 210 on the back side in the direction of the axis line X1 is opened.
- the tube case 210 is made of a transparent or translucent resin material (for example, polycarbonate).
- the tube 220 is made of a resin material (for example, silicone rubber) having elasticity.
- the tube 220 is a tubular member for conveying a liquid supplied from one end of the tube 220, which is a supply source, to the other end of the tube 220, which is a supply destination.
- the pair of tube pressing rings 230 are attached at two predetermined positions on the tube 220.
- each tube pressing ring 230 includes a first pressing member 231 and a second pressing member 232.
- a projection portion 231a, an insertion hole 231b, and a fixing groove 231c are formed on the first pressing member 231.
- a projection portion 232a, an insertion hole 232b, and a fixing groove 232c are formed on the second pressing member 232.
- the projection portion 231a is inserted into the insertion hole 232b, and the projection portion 232a is inserted into the insertion hole 231b so that the first pressing member 231 and the second pressing member 232 are connected with each other with the tube 220 interposed therebetween.
- the fixing groove 231c and the fixing groove 232c form an inner peripheral surface of the tube pressing ring 230.
- An inner diameter of the inner peripheral surface of the tube pressing ring 230 is smaller than an outer diameter of the tube 220 so that an outer peripheral surface of the tube 220 is elastically deformed by the fixing groove 231c and the fixing groove 232c. Accordingly, even when an external force caused by the drive mechanism 100 acts on the tube 220, a state is maintained where the tube 220 is fixed by the tube pressing rings 230.
- the pair of tube pressing rings 230 attached to the tube 220 are housed in and fixed to the pair of fixing holes 213 formed on the tube case 210. Positions where the pair of tube pressing rings 230 are attached to the tube 220 are adjusted such that, in a state where the pair of tube pressing rings 230 are fixed to the pair of fixing holes 213, the tube 220 is brought into contact with a whole region of the inner peripheral surface 211 of the tube case 210.
- FIG. 9 and Fig. 10 are views of the holding mechanism 200 attached to the drive mechanism 100 as viewed from the back side (drive mechanism 100 side).
- the first roller unit 10 and the second roller unit 20 of the drive mechanism 100 are respectively rotated by the first drive unit 50 and the second drive unit 60 independently about the axis line X1.
- the first roller unit 10 and the second roller unit 20 respectively rotate in the clockwise direction about the axis line X1.
- the tube 220 is elastically deformed thus being compressed at the position where the respective roller units are disposed.
- Fig. 9 shows a state where the first roller unit 10 moves while compressing the tube 220, and the second roller unit 20 starts to come into contact with the tube 220.
- a state shown in Fig. 9 is brought about, a liquid in the tube 220 is closed within a range of an angle ⁇ 1 about the axis line X1.
- a state shown in Fig. 10 is brought about.
- Fig. 10 shows a state where the second roller unit 20 moves while compressing the tube 220, and the first roller unit 10 starts to separate from the tube 220.
- the liquid in the tube 220 is closed within a range of an angle ⁇ 2 about the axis line X1.
- the angle ⁇ 2 is narrower than the angle ⁇ 1. Accordingly, when the state of the roller units changes from the state shown in Fig. 9 to the state shown in Fig. 10 , a pressure of the liquid in the tube 220 closed by the first roller unit 10 and the second roller unit 20 increases.
- the first roller unit 10 and the second roller unit 20 can be rotated independently. Accordingly, by setting the angle ⁇ 2 smaller than the angle ⁇ 1 as shown in Fig. 9 and Fig. 10 , it is possible to increase a pressure of a liquid to be displaced from the outflow side 220b of the tube 220. Further, when the angle ⁇ 1 and the angle ⁇ 2 are set equal to each other, it is possible to set a pressure of a liquid flowing into the tube 220 from the inflow side 220a equal to a pressure of the fluid flowing out from the tube 220 from the outflow side 220b. Further, when the angle ⁇ 2 is set larger than the angle ⁇ 1, it is possible to reduce a pressure of a liquid to be displaced from the outflow side 220b of the tube 220.
- a pressure of a liquid to be displaced from the outflow side 220b can be properly adjusted.
- the angle ⁇ 1 indicates a range where the second roller unit 20 moves before the first roller unit 10 starts separation from the tube 220 after the second roller unit 20 starts to come into contact with the tube 220.
- the angle ⁇ 2 indicates a range where the first roller unit 10 moves before the first roller unit 10 starts separation from the tube 220 after the second roller unit 20 starts to come into contact with the tube 220.
- an arcuate inner peripheral surface of the tube case 210 is formed within a range of an angle ( ⁇ 1+ ⁇ 2) about the axis line X1.
- the angle ( ⁇ 1+ ⁇ 2) is set larger than 180 degrees, and the arcuate inner peripheral surface of the tube case 210 is formed in the range of the angle ( ⁇ 1+ ⁇ 2).
- the angle ( ⁇ 1+ ⁇ 2) is set larger than 180 degrees. However, it is more preferable that the angle ( ⁇ 1+ ⁇ 2) be increased as much as possible within a range smaller than an angle at which the first roller unit 10 and the second roller unit 20 are in contact with the tube 220 (for example, the angle ( ⁇ 1+ ⁇ 2) is smaller than 300 degrees).
- Fig. 11 is a front view of the tube pump 500 shown in Fig. 1 , and is also a view showing a state where the holding mechanism 200 is not mounted on the attachment mechanism 300.
- Fig. 12 is a front view of the tube pump 500 shown in Fig. 1 , and is also a view showing a state where the holding mechanism 200 is mounted on the attachment mechanism 300.
- Fig. 13 is a plan view of the housing mechanism 310 of the attachment mechanism 300 shown in Fig. 11 as viewed from above the tube pump 500.
- the attachment mechanism 300 includes: a housing mechanism 310 for housing and fixing the holding mechanism 200; and an advancing and retracting mechanism 320 for advancing and retracting the housing mechanism 310 along the axis line X1.
- the housing mechanism 310 includes: a housing case 311 for housing the holding mechanism 200; a pair of first support shafts 312 for supporting the housing case 311; a pair of second support shafts 313 for supporting the pair of first support shafts 312; a holding member 314 for holding the pair of second support shafts 313; and a female threaded portion 315 attached to the holding member 314.
- the advancing and retracting mechanism 320 includes: a drive motor 321; a drive pulley 322 driven by the drive motor 321; a driven pulley 323; a drive belt 324 for transmitting a drive force of the drive pulley 322 to the driven pulley 323; and a rotary shaft 325 which rotates about an axis line X2 together with the driven pulley 323.
- the advancing and retracting mechanism 320 in this embodiment is a mechanism which can change over a state of the tube pump between a mounting state shown in Fig. 1 where the tube 220, the first roller unit 10, and the second roller unit 20 are disposed at the same position on the axis line X1 and a separated state shown in Fig. 12 where the holding mechanism 200 is disposed at the position separated from the drive mechanism 100 by a distance.
- the drive motor 321 of the advancing and retracting mechanism 320 rotates in response to a control signal from the control unit 400 thus rotating the drive pulley 322.
- a drive force of the drive pulley 322 is transmitted to the driven pulley 323 through the drive belt 324 thus rotating the driven pulley 323 about the axis line X2.
- the rotary shaft 325 rotates about the axis line X2 together with the driven pulley 323.
- a male thread is formed on an outer peripheral surface of the rotary shaft 325, and is fastened to the female threaded portion 315 of the housing mechanism 310. Accordingly, when the rotary shaft 325 rotates about the axis line X2, the female threaded portion 315 of the housing mechanism 310 moves along the axis line X2.
- the female threaded portion 315 is connected with the holding member 314, the pair of second support shafts 313, the pair of first support shafts 312, and the housing case 311. Therefore, when the female threaded portion 315 moves along the axis line X2, the entire housing mechanism 310 including the housing case 311 moves along the axis line X2.
- the control unit 400 drives the drive motor 321 of the advancing and retracting mechanism 320 thus bringing the tube pump 500 into the separated state shown in Fig. 11 . Thereafter, an operator moves the holding mechanism 200 to the housing case 311 of the housing mechanism 310 while gripping the holding mechanism 200 so that the holding mechanism 200 is mounted on the tube pump 500.
- the housing case 311 includes a set plate 311a formed into a plate shape and a case body 311b.
- a pair of housing grooves 311c for housing the pair of projections 212 of the holding mechanism 200 are formed on the case body 311b.
- the operator presses the back side of the holding mechanism 200 gripped by a hand of the operator to the set plate 311a and, thereafter, the pair of projections 212 of the holding mechanism 200 is housed in the pair of housing grooves 311c. With such operations, the operator can easily attach the holding mechanism 200 to the housing mechanism 310.
- the holding mechanism 200 is attached to the housing mechanism 310 as shown in Fig. 12 . Thereafter, the control unit 400 drives the drive motor 321 so as to move the housing mechanism 310 in the direction where the housing mechanism 310 approaches the drive mechanism 100 along the axis line X1. Therefore, the tube pump 500 is brought into a mounting state shown in Fig. 1 where the tube 220, the first roller unit 10, and the second roller unit 20 are disposed at the same position on the axis line X1.
- the drive mechanism 100 in this embodiment can perform a displacement control mode (first control mode) where the first roller unit 10 and the second roller unit 20 are rotated in the same direction so as to displace a liquid in the tube 220 using the first roller unit 10 and the second roller unit 20.
- first control mode a displacement control mode
- the tube 220 In the displacement control mode, as shown in Fig. 9 and Fig. 10 , at least either one of the first roller unit 10 or the second roller unit 20 is in contact with the tube 220 and hence, the replacement of the holding mechanism 200 cannot be performed. Further, when the first roller unit 10 and the second roller unit 20 are disposed at the position shown in Fig. 9 and Fig. 10 in a state where the holding mechanism 200 is not mounted on the drive mechanism 100, the tube 220 cannot be inserted into a gap formed between the respective roller units and the inner peripheral surface 211 of the tube case 210.
- the drive mechanism 100 in this embodiment can perform a tube replacement mode (second control mode) in place of the displacement control mode in response to a control signal from the control unit 400.
- a tube replacement mode second control mode
- the control unit 400 fixes respective rotation angles of the first roller unit 10 and the second roller unit 20 so as to prevent the first roller unit 10 and the second roller unit 20 from coming into contact with the tube 220.
- the rotation angles at which the first roller unit 10 and the second roller unit 20 do not come into contact with the tube 220 are rotation angles shown in Fig. 14 .
- Fig. 14 is a partially enlarged view of the drive mechanism 100 shown in Fig. 12 .
- the position where the tube 220 is disposed when the holding mechanism 200 is mounted on the drive mechanism 100 is indicated by an imaginary line.
- the control unit 400 when the control unit 400 performs the tube replacement mode, the first roller unit 10 and the second roller unit 20 retract so as to prevent a contact with the tube 220.
- the control unit 400 Upon receipt of an instruction to change over between the above-described mounting state and separated state from an operator, the control unit 400 in this embodiment controls the advancing and retracting mechanism 320 and, at the same time, performs the tube replacement mode when a state of the tube pump is changed over from the separated state to the mounting state. Accordingly, in attaching the holding mechanism 200 to the drive mechanism 100 using the attachment mechanism 300, it is possible to prevent a problem where the tube 220 comes into contact with the first roller unit 10 and the second roller unit 20.
- the drive mechanism 100 can perform the displacement control mode and the tube replacement mode in response to a control signal from the control unit 400.
- the drive mechanism 100 may adopt another mode.
- it may be configured such that the control unit 400 is incorporated into the drive mechanism 100, and the drive mechanism 100 controls the rotation of the first roller unit 10 performed by the first drive unit 50 and the rotation of the second roller unit 20 performed by the second drive unit 60.
- the drive mechanism 100 includes the first roller unit 10, the second roller unit 20, the first drive unit 50, and the second drive unit 60. Accordingly, the first roller unit 10 and the second roller unit 20, which rotate while being in contact with the tube 220 held by the holding mechanism 200 in an arcuate shape about the axis line X1, can be independently rotated about the axis line X1.
- the holding mechanism 200 is detachably attached to the drive mechanism 100 by the attachment mechanism 300 so that the tube 220 can be easily replaced.
- the tube pump 500 of this embodiment includes the control unit 400 for controlling the first drive unit 50 and the second drive unit 60.
- the control unit 400 can perform the displacement control mode (first control mode) where the first roller unit 10 and the second roller unit 20 are rotated in the same direction so as to convey a liquid in the tube 220, and the tube replacement mode (second control mode) where positions of the first roller unit 10 and the second roller unit 20 disposed about the axis line X1 are respectively fixed so as to prevent the first roller unit 10 and the second roller unit 20 from coming into contact with the tube 220.
- the first roller unit 10 and the second roller unit 20 can be fixed so as to prevent a contact with the tube 220. Accordingly, in attaching the holding mechanism 200 to the drive mechanism 100 using the attachment mechanism 300, the holding mechanism 200 can be easily and reliably attached to the drive mechanism 100 while preventing the tube 220 from coming into contact with the first roller unit 10 and the second roller unit 20. Further, by performing the displacement control mode after the holding mechanism 200 is attached to the drive mechanism 100 by the attachment mechanism 300, a liquid in the tube 220 can be conveyed.
- the attachment mechanism 300 includes: the housing mechanism 310 for housing the holding mechanism 200; and the advancing and retracting mechanism 320 for advancing and retracting the housing mechanism 310 along the axis line X1.
- the advancing and retracting mechanism 320 is a mechanism capable of changing over a state of the tube pump between the mounting state where the tube 220, the first roller unit 10, and the second roller unit 20 are disposed at the same position on the axis line X1 and the separated state where the holding mechanism 200 is disposed at the position separated from the drive mechanism 100 by a distance.
- the holding mechanism 200 which is housed in the housing mechanism 310 is made to advance and retract along the axis line X1 by the advancing and retracting mechanism 320.
- a state of the tube pump can be changed over reliably between the separated state and the mounting state while preventing the tube 220 from coming into contact with the roller unit.
- control unit 400 controls the advancing and retracting mechanism 320 so as to change over a state of the tube pump between the mounting state and the separated state, and the control unit 400 performs the tube replacement mode in changing over the state of the tube pump from the separated state to the mounting state.
- the tube replacement mode is performed by the control unit 400 so that the roller units are fixed at the position where the roller units do not come into contact with the tube 220. Thereafter, the state of the tube pump is changed over from the separated state to the mounting state. Accordingly, in attaching the holding mechanism 200 to the drive mechanism 100, an operator is required to perform only a relatively simple operation, that is, to house the holding mechanism 200 in the housing mechanism 310.
- the holding mechanism 200 of this embodiment is detachably attached to the drive mechanism 100 including the first roller unit 10 and the second roller unit 20 which rotate about the axis line X1 while being in contact with the tube 220 having elasticity. Further, the holding mechanism 200 includes: the tube case 210 on which the inner peripheral surface 211 is formed, the tube case 210 holding the tube 220 in an arcuate shape about the axis line X1; and the pair of fixing holes 213 for housing and fixing the pair of tube pressing rings 230 attached to the outer peripheral surface of the tube 220.
- the inner peripheral surface 211 is formed in a range larger than 180 degrees about the axis line X1.
- the inner peripheral surface 211 of the holding mechanism 200 is formed in a range larger than 180 degrees about the axis line X1. Accordingly, when the tube 220 is disposed along the inner peripheral surface 211 of the tube case 210, the tube 220 comes into contact with the arcuate inner peripheral surface 211 of the tube case 210 with a distance longer than a half of a circumference of an arcuate shape of the inner peripheral surface 211. With such a configuration, when the roller units rotate about the axis line X1, a range where the roller units come into contact with the tube 220 increases. Therefore, along with the increase in such a range, an amount of a liquid which is sandwiched between the pair of roller units increases. The larger an amount of the liquid becomes, the more an increase amount of pressure of a liquid which can be increased by the tube pump 500 increases so that pulsing of a liquid can be properly controlled.
- the tube case 210 is formed into a cylindrical shape, and one end of the tube case 210 in the direction of the axis line X1 is closed and the other end of the tube case 210 in the direction of the axis line X1 is opened.
- One end of the tube case 210 is closed so that a problem such as damage of the tube 220 carelessly caused by an operator can be suppressed.
- the other end of the tube case 210 is opened so that the holding mechanism 200 can be attached to the drive mechanism 100.
- the attachment mechanism 300 is configured to move the housing mechanism 310 along the axis line X1 by a drive force of the drive motor 321.
- the attachment mechanism 300 may adopt another mode. For example, instead of using a drive force of the drive motor 321, an operator may operate the advancing and retracting mechanism 320 so as to apply power to the advancing and retracting mechanism 320.
- the advancing and retracting mechanism 320 may not be provided, and the holding mechanism 200 may be directly attached to the drive mechanism 100 using fastenings. Also in the above-mentioned case, the control unit 400 performs the tube replacement mode so that it is possible to prevent a problem where the tube 220 comes into contact with the first roller unit 10 and the second roller unit 20 when the holding mechanism 200 is attached to the drive mechanism 100.
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Description
- The present invention relates to a tube pump and a holding mechanism.
- Conventionally, there has been known a pump where a pair of pressing elements are rotated so as to press a tube thus displacing a liquid from one end side to the other end side of the tube (for example, see Japanese Unexamined Patent Application, Publication No.
Hei5-263765 - In the pump disclosed in PTL 1, a rotary shaft to which one pressing element is connected is projected upward, and a rotary shaft to which the other pressing element is connected is projected downward. The pump disclosed in PTL 1 is configured such that drive forces of a pair of electric motors are respectively transmitted to the rotary shafts, which project upward and downward, through a pair of reducers so that the pair of pressing elements are rotated at non-constant velocities thus displacing the liquid by small pulsation.
- The pump disclosed in PTL 1 includes a drum having an arcuate inner peripheral surface and a tube disposed on the inner peripheral surface of the drum. The pump is configured such that the rotary shafts connected to the pair of pressing elements and a drive mechanism for driving the rotary shafts project upward and downward from the drum.
-
EP 3061473 A1 discloses a peristaltic pump with variable angle pressure rollers, wherein the low-pressure side pressure and the high-pressure side pressure are sensed, a pressure difference is formed and angular positioning of pinch elements relative to each other is performed is performed depending on said angular difference. -
WO 2011/057663 A1 discloses a hose cartridge for removably mounting a hose on a peristaltic pump comprising a roller wheel for pumping a fluid through said hose, said hose cartridge substantially describing a closed loop encircling an opening through which said roller wheel extends when the hose cartridge is mounted on a peristaltic pump. - In replacing a liquid to be conveyed by the pump, it is common to clean a tube with pure water or the like and reuse the tube or to replace the tube per se. Particularly, in a field of bioscience such as regenerative medicine, it is more common to replace the tube per se.
- In the pump disclosed in PTL 1, however, the drive mechanism and the like are disposed above and below the drum where the tube is disposed on the inner peripheral surface of the drum. Accordingly, the tube disposed on the inner peripheral surface of the drum cannot be easily replaced.
- The present invention has been made under such circumstances, and it is an object of the present invention to provide a tube pump where each of a pair of contact members, which rotate while being in contact with a tube, can be rotated independently, and the tube can be easily replaced.
- To solve the above-described problem, the present invention employs the following solutions, namely a tube pump according to claim 1 and a holding mechanism according to claim 5.
- According to one aspect of the present invention, there is provided a tube pump which includes: a drive mechanism including a pair of contact members configured to rotate about an axis line while being in contact with a tube having elasticity, and a pair of drive units configured to cause the pair of contact members to rotate independently about the axis line; a holding mechanism configured to hold the tube in an arcuate shape about the axis line; and an attachment mechanism configured to detachably attach the holding mechanism to the drive mechanism, wherein the holding mechanism is configured to be detachably attached to a drive mechanism including a pair of contact members which rotate about an axis line X1 while being in contact with a tube having elasticity, the holding mechanism comprises a holding portion on which an inner peripheral surface is formed, the holding portion holding the tube in an arcuate shape about the axis line X1; and a pair of fixing portions configured to house and fix a pair of positioning members attached to an outer peripheral surface of the tube, wherein the inner peripheral surface is formed in a range larger than 180 degrees about the axis line X1, and wherein the holding portion is formed into a cylindrical shape, and one end of the holding portion in a direction of the axis line X1 is closed and the other end of the holding portion in the direction of the axis line X1 is opened.
- According to the tube pump of one aspect of the present invention, the drive mechanism includes the pair of contact members and the pair of drive units. Accordingly, the pair of contact members, which rotate while being in contact with the tube held by the holding mechanism in an arcuate shape about the axis line, can be independently rotated about the axis line.
- According to the tube pump of one aspect of the present invention, the holding mechanism is detachably attached to the drive mechanism by the attachment mechanism so that the tube can be easily replaced.
- The tube pump according to one aspect of the prevent invention may be configured such that the tube pump further includes a control unit configured to control the pair of drive units, wherein the control unit is capable of performing a first control mode where the pair of contact members are rotated in the same direction so as to convey a liquid in the tube, and a second control mode where positions of the pair of contact members disposed about the axis line are respectively fixed so as to prevent the pair of contact members from coming into contact with the tube.
- According to the tube pump having such a configuration, by performing the second control mode, the pair of contact members can be fixed so as to prevent a contact with the tube. Accordingly, in attaching the holding mechanism to the drive mechanism by the attachment mechanism, the holding mechanism can be easily and reliably attached to the drive mechanism while preventing the tube from coming into contact with the pair of contact members. Further, by performing the first control mode after the holding mechanism is attached to the drive mechanism by the attachment mechanism, a liquid in the tube can be conveyed.
- In the tube pump having the above-mentioned configuration, the attachment mechanism may include: a housing mechanism configured to house the holding mechanism; and an advancing and retracting mechanism configured to advance and retract the housing mechanism along the axis line, and the advancing and retracting mechanism may be a mechanism capable of changing over a state of the tube pump between a mounting state where the tube and the pair of contact members are disposed at the same position an the axis line and a separated state where the holding mechanism is disposed at a position separated from the drive mechanism by a distance.
- According to the tube pump of this aspect, the holding mechanism which is housed in the housing mechanism is made to advance and retract along the axis line by the advancing and retracting mechanism. With such a configuration, a state of the tube pump can be changed over reliably between the separated state and the mounting state while preventing the tube from coming into contact with the contact member and the like.
- In the tube pump of the above-mentioned aspect, the control unit may be configured to control the advancing and retracting mechanism so as to change over a state of the tube pump between the mounting state and the separated state, and the control unit may be configured to perform the second control mode in changing over the state of the tube pump from the separated state to the mounting state.
- With such a configuration, in attaching the holding mechanism to the drive mechanism, the second control mode is performed by the control unit so that the pair of contact members are fixed at the position where the pair of contact members do not come into contact with the tube. Thereafter, the state of the tube pump is changed over from the separated state to the mounting state. Accordingly, in attaching the holding mechanism to the drive mechanism, an Operator is required to perform only a relatively simple operation, that is, to house the holding mechanism in the housing mechanism.
- According to another aspect of the present invention, there is provided a holding mechanism configured to be detachably attached to a drive mechanism including a pair of contact members which rotate about an axis line while being in contact with a tube having elasticity, the holding mechanism including: a holding portion an which an inner peripheral surface is formed, the holding portion holding the tube in an arcuate shape about the axis line; and a pair of fixing portions configured to house and fix a pair of positioning members attached to an outer peripheral surface of the tube, wherein the inner peripheral surface is formed in a range larger than 180 degrees about the axis line, wherein the holding portion is formed into a cylindrical shape, and one end of the holding portion in a direction of the axis line is closed and the other end of the holding portion in the direction of the axis line is opened.
- According to the holding mechanism of the present invention, the inner peripheral surface of the holding mechanism is formed in a range large than 180 degrees about the axis line. Accordingly, when the tube is disposed along the inner peripheral surface of the holding portion, the tube comes into contact with the arcuate inner peripheral surface of the holding portion with a distance longer than a half of a circumference of an arcuate shape of the inner peripheral surface. With such a configuration, when the contact members rotate about the axis line, a range where the contact members come into contact with the tube increases. Therefore, along with the increase in such a range, an amount of a liquid which is sandwiched between the pair of contact members increases. The larger an amount of the liquid becomes, the more an increase amount of pressure of a liquid which can be increased by the tube pump increases so that pulsing of a liquid can be properly controlled.
- In the holding mechanism according of the present invention, the holding portion is formed into a cylindrical shape, and one end of the holding portion in a direction of the axis line is closed and the other end of the holding portion in the direction of the axis line is opened.
- One end of the holding portion is closed so that a problem such as damage of the tube carelessly caused by an operator can be suppressed. At the same time, the other end of the holding portion is opened so that the holding mechanism can be attached to the drive mechanism.
- According to the present invention, it is possible to provide a tube pump where each of a pair of contact members, which rotate while being in contact with a tube, can be rotated independently, and the tube can be easily replaced.
-
- {
Fig. 1} Fig. 1 is a longitudinal cross-sectional view showing one embodiment of a tube pump. - {
Fig. 2} Fig. 2 is a partially enlarged view of the tube pump shown inFig. 1 . - {
Fig. 3} Fig. 3 is a right side view of the tube pump shown inFig. 1 . - {
Fig. 4} Fig. 4 is a view showing a control configuration of the tube pump according to one embodiment. - {
Fig. 5} Fig. 5 is a front view of a holding mechanism. - {
Fig. 6} Fig. 6 is a back view of the holding mechanism. - {
Fig. 7} Fig. 7 is an exploded view of a tube pressing ring. - {
Fig. 8} Fig. 8 is a view showing a state where the tube pressing ring is attached to a tube. - {
Fig. 9} Fig. 9 is a view of the holding mechanism attached to a drive mechanism as viewed from the back side. - {
Fig. 10} Fig. 10 is a view of the holding mechanism attached to the drive mechanism as viewed from the back side. - {
Fig. 11} Fig. 11 is a front view of the tube pump shown inFig. 1 , and is also a view showing a state where the holding mechanism is not mounted on the attachment mechanism. - {
Fig. 12} Fig. 12 is a front view of the tube pump shown inFig. 1 , and is also a view showing a state where the holding mechanism is mounted on the attachment mechanism. - {
Fig. 13} Fig. 13 is a plan view of a housing mechanism shown inFig. 11 as viewed from above. - {
Fig. 14} Fig. 14 is a partially enlarged view of the drive mechanism shown inFig. 12 . - Hereinafter, a
tube pump 500 according to one embodiment of the present invention is described with reference to drawings. - As shown in
Fig. 1 to Fig. 3 , thetube pump 500 of this embodiment is an apparatus where a first roller unit 10 (first contact member) and a second roller unit 20 (second contact member) are rotated in the same direction about an axis line X1 so that a fluid which flows into atube 220 from aninflow side 220a and is in thetube 220 is displaced to anoutflow side 220b. - As shown in
Fig. 1 , thetube pump 500 of this embodiment includes: adrive mechanism 100 for driving thefirst roller unit 10 and thesecond roller unit 20; aholding mechanism 200 for holding thetube 220; anattachment mechanism 300 for detachably attaching theholding mechanism 200 to thedrive mechanism 100; and acontrol unit 400 not shown in the drawing. Hereinafter, respective parts included in thetube pump 500 are described. - First, the
drive mechanism 100 in this embodiment is described. - As shown in
Fig. 1 to Fig. 3 , thedrive mechanism 100 in this embodiment includes: thefirst roller unit 10 and thesecond roller unit 20 which rotate about an axis line X1 while being in contact with thetube 220; adrive shaft 30 which is disposed on the axis line X1, and is connected to thefirst roller unit 10; adrive cylinder 40 which is connected to thesecond roller unit 20; afirst drive unit 50 which transmits a drive force to thedrive shaft 30; and asecond drive unit 60 which transmits a drive force to thedrive cylinder 40. - As shown in
Fig. 2 , thefirst roller unit 10 includes: afirst roller 11 which rotates about an axis line extending parallel to the axis line X1 while thefirst roller 11 is in contact with thetube 220; a firstroller support member 12 which is connected to thedrive shaft 30 so as to integrally rotate with thedrive shaft 30 about the axis line X1; and afirst roller shaft 13 which has both end portions thereof supported by the firstroller support member 12, and to which thefirst roller 11 is rotatably attached. - The
second roller unit 20 includes: asecond roller 21 which rotates about an axis line extending parallel to the axis line X1 while thesecond roller 21 is in contact with thetube 220; a secondroller support member 22 which is connected to thedrive cylinder 40 so as to integrally rotate with thedrive cylinder 40 about the axis line X1; and asecond roller shaft 23 which has both end portions thereof supported by the secondroller support member 22, and to which thesecond roller 21 is rotatably attached. - The
first drive unit 50 includes a firstelectric motor 51 and apower transmission mechanism 52. Thefirst drive unit 50 transmits a rotational force of the firstelectric motor 51 to thedrive shaft 30 through thepower transmission mechanism 52. Thefirst roller unit 10 rotates about the axis line X1 along with the rotation of thedrive shaft 30. - The
second drive unit 60 includes: a secondelectric motor 61; adrive pulley 62; a drivenpulley 63; and abelt 64. Thesecond drive unit 60 transmits a rotational force of the secondelectric motor 61 to the drivepulley 62 so as to cause thebelt 64 to rotate about the axis line X1. A rotational force of thebelt 64 is transmitted to an outer peripheral surface of the drivenpulley 63. At this stage of operation, an inner peripheral surface of the drivenpulley 63 is fixed to an outer peripheral surface of thedrive cylinder 40. Accordingly, the rotational force of thebelt 64 is transmitted from the drivenpulley 63 to thedrive cylinder 40. - As shown in
Fig. 2 , thedrive cylinder 40 is disposed on the outer peripheral side of thedrive shaft 30 with a bearingmember 31 interposed between thedrive cylinder 40 and thedrive shaft 30. Accordingly, thedrive cylinder 40 can rotate about the axis line X1 independently from thedrive shaft 30. Thedrive shaft 30 rotates about the axis line X1 by a drive force caused by thefirst drive unit 50. Thedrive cylinder 40 rotates about the axis line X1 by a drive force caused by thesecond drive unit 60 independently from thedrive shaft 30. - The second
roller support member 22 of thesecond roller unit 20 is connected to the distal end side of thedrive cylinder 40 so as to rotate integrally with thedrive cylinder 40 about the axis line X1. Accordingly, thesecond roller unit 20 rotates about the axis line X1 along with the rotation of thedrive cylinder 40. - Next, the displacement of a liquid performed by the
tube pump 500 of this embodiment is described. -
Fig. 4 is a view showing a control configuration of thetube pump 500 of this embodiment. In thetube pump 500 of this embodiment, a flow rate of a fluid displaced from thetube 220 held by theholding mechanism 200 is measured by aflowmeter 600, and thecontrol unit 400 receives the measured result. Thecontrol unit 400 controls thedrive mechanism 100 based on the received measured result such that a flow rate of a liquid measured by theflowmeter 600 assumes a desired flow rate. At this stage of the operation, theflowmeter 600 may be incorporated into thetube pump 500 as a part of thetube pump 500. Alternatively, theflowmeter 600 may be a device separated from thetube pump 500. - In the
tube pump 500 shown inFig. 4 , a control signal for controlling thefirst drive unit 50 and thesecond drive unit 60 of thedrive mechanism 100 is transmitted from thecontrol unit 400 to thedrive mechanism 100. - The
drive mechanism 100 may be formed as a mechanism into which thecontrol unit 400 is incorporated. In this case, thecontrol unit 400 incorporated into thedrive mechanism 100 generates a control signal for controlling thefirst drive unit 50 and thesecond drive unit 60, and transmits the control signal to thefirst drive unit 50 and thesecond drive unit 60. - Next, the
holding mechanism 200 of this embodiment is described. - As shown in
Fig. 5 which is a front view andFig. 6 which is a back view, theholding mechanism 200 includes: a tube case (holding portion) 210; thetube 220; and a pair of tube pressing rings 230 (positioning members). - The
tube case 210 has: an innerperipheral surface 211 which holds thetube 220 in an arcuate shape about the axis line X1; a pair ofprojections 212 which are housed in ahousing mechanism 310 of theattachment mechanism 300 described later; and a pair of fixingholes 213 for housing and fixing the pair of tube pressing rings 230. Thetube case 210 is formed into a substantially cylindrical shape about the axis line X1. At the same time, thetube case 210 has a shape where one end of thetube case 210 on the front side in the direction of the axis line X1 is closed, and the other end of thetube case 210 on the back side in the direction of the axis line X1 is opened. Thetube case 210 is made of a transparent or translucent resin material (for example, polycarbonate). - The
tube 220 is made of a resin material (for example, silicone rubber) having elasticity. Thetube 220 is a tubular member for conveying a liquid supplied from one end of thetube 220, which is a supply source, to the other end of thetube 220, which is a supply destination. The pair oftube pressing rings 230 are attached at two predetermined positions on thetube 220. - As shown in
Fig. 7 , eachtube pressing ring 230 includes a first pressingmember 231 and a secondpressing member 232. Aprojection portion 231a, aninsertion hole 231b, and a fixinggroove 231c are formed on the first pressingmember 231. Aprojection portion 232a, aninsertion hole 232b, and a fixinggroove 232c are formed on the second pressingmember 232. Theprojection portion 231a is inserted into theinsertion hole 232b, and theprojection portion 232a is inserted into theinsertion hole 231b so that the first pressingmember 231 and the second pressingmember 232 are connected with each other with thetube 220 interposed therebetween. - As shown in
Fig. 8 , in a state where the first pressingmember 231 and the second pressingmember 232 are connected with each other, the fixinggroove 231c and the fixinggroove 232c form an inner peripheral surface of thetube pressing ring 230. An inner diameter of the inner peripheral surface of thetube pressing ring 230 is smaller than an outer diameter of thetube 220 so that an outer peripheral surface of thetube 220 is elastically deformed by the fixinggroove 231c and the fixinggroove 232c. Accordingly, even when an external force caused by thedrive mechanism 100 acts on thetube 220, a state is maintained where thetube 220 is fixed by the tube pressing rings 230. - As shown in
Fig. 6 , the pair oftube pressing rings 230 attached to thetube 220 are housed in and fixed to the pair of fixingholes 213 formed on thetube case 210. Positions where the pair oftube pressing rings 230 are attached to thetube 220 are adjusted such that, in a state where the pair oftube pressing rings 230 are fixed to the pair of fixingholes 213, thetube 220 is brought into contact with a whole region of the innerperipheral surface 211 of thetube case 210. - A range where the inner
peripheral surface 211 of thetube case 210 is formed is described with reference toFig. 9 andFig. 10 .Fig. 9 andFig. 10 are views of theholding mechanism 200 attached to thedrive mechanism 100 as viewed from the back side (drive mechanism 100 side). - The
first roller unit 10 and thesecond roller unit 20 of thedrive mechanism 100 are respectively rotated by thefirst drive unit 50 and thesecond drive unit 60 independently about the axis line X1. InFig. 9 andFig. 10 , thefirst roller unit 10 and thesecond roller unit 20 respectively rotate in the clockwise direction about the axis line X1. When thefirst roller unit 10 and thesecond roller unit 20 are disposed so as to opposedly face the innerperipheral surface 211 of thetube case 210, thetube 220 is elastically deformed thus being compressed at the position where the respective roller units are disposed. -
Fig. 9 shows a state where thefirst roller unit 10 moves while compressing thetube 220, and thesecond roller unit 20 starts to come into contact with thetube 220. When a state shown inFig. 9 is brought about, a liquid in thetube 220 is closed within a range of an angle θ1 about the axis line X1. When thefirst roller unit 10 and thesecond roller unit 20 further rotate respectively in the clockwise direction from the state shown inFig. 9 , a state shown inFig. 10 is brought about. -
Fig. 10 shows a state where thesecond roller unit 20 moves while compressing thetube 220, and thefirst roller unit 10 starts to separate from thetube 220. When the state shown inFig. 10 is brought about, the liquid in thetube 220 is closed within a range of an angle θ2 about the axis line X1. When the state shown inFig. 9 and the state shown inFig. 10 are compared with each other, the angle θ2 is narrower than the angle θ1. Accordingly, when the state of the roller units changes from the state shown inFig. 9 to the state shown inFig. 10 , a pressure of the liquid in thetube 220 closed by thefirst roller unit 10 and thesecond roller unit 20 increases. - As described above, in the
tube pump 500 of this embodiment, thefirst roller unit 10 and thesecond roller unit 20 can be rotated independently. Accordingly, by setting the angle θ2 smaller than the angle θ1 as shown inFig. 9 andFig. 10 , it is possible to increase a pressure of a liquid to be displaced from theoutflow side 220b of thetube 220. Further, when the angle θ1 and the angle θ2 are set equal to each other, it is possible to set a pressure of a liquid flowing into thetube 220 from theinflow side 220a equal to a pressure of the fluid flowing out from thetube 220 from theoutflow side 220b. Further, when the angle θ2 is set larger than the angle θ1, it is possible to reduce a pressure of a liquid to be displaced from theoutflow side 220b of thetube 220. - As described above, in the
tube pump 500 of this embodiment, by properly adjusting the angle θ1 and the angle θ2 each of which is formed by thefirst roller unit 10 and thesecond roller unit 20, a pressure of a liquid to be displaced from theoutflow side 220b can be properly adjusted. The more the angle θ1 is increased thus reducing the angle θ2, the more an increase amount of pressure of a liquid to be displaced from thetube pump 500 can be increased. - The angle θ1 indicates a range where the
second roller unit 20 moves before thefirst roller unit 10 starts separation from thetube 220 after thesecond roller unit 20 starts to come into contact with thetube 220. The angle θ2 indicates a range where thefirst roller unit 10 moves before thefirst roller unit 10 starts separation from thetube 220 after thesecond roller unit 20 starts to come into contact with thetube 220. In thetube pump 500 of this embodiment, an arcuate inner peripheral surface of thetube case 210 is formed within a range of an angle (θ1+θ2) about the axis line X1. - In this embodiment, the angle (θ1+θ2) is set larger than 180 degrees, and the arcuate inner peripheral surface of the
tube case 210 is formed in the range of the angle (θ1+θ2). With such a configuration, compared to the case where the angle (θ1+θ2) is set smaller than 180 degrees, the angle θ1 is increased and, at the same time, the angle θ2 is reduced and hence, an increase amount of pressure of a liquid to be displaced from thetube pump 500 can be increased. - In the description made heretofore, the angle (θ1+θ2) is set larger than 180 degrees. However, it is more preferable that the angle (θ1+θ2) be increased as much as possible within a range smaller than an angle at which the
first roller unit 10 and thesecond roller unit 20 are in contact with the tube 220 (for example, the angle (θ1+θ2) is smaller than 300 degrees). - Next, the
attachment mechanism 300 in this embodiment is described with reference toFig. 11 to Fig. 13 . -
Fig. 11 is a front view of thetube pump 500 shown inFig. 1 , and is also a view showing a state where theholding mechanism 200 is not mounted on theattachment mechanism 300.Fig. 12 is a front view of thetube pump 500 shown inFig. 1 , and is also a view showing a state where theholding mechanism 200 is mounted on theattachment mechanism 300.Fig. 13 is a plan view of thehousing mechanism 310 of theattachment mechanism 300 shown inFig. 11 as viewed from above thetube pump 500. - As shown in
Fig. 11 andFig. 12 , theattachment mechanism 300 includes: ahousing mechanism 310 for housing and fixing theholding mechanism 200; and an advancing andretracting mechanism 320 for advancing and retracting thehousing mechanism 310 along the axis line X1. - The
housing mechanism 310 includes: ahousing case 311 for housing theholding mechanism 200; a pair offirst support shafts 312 for supporting thehousing case 311; a pair ofsecond support shafts 313 for supporting the pair offirst support shafts 312; a holdingmember 314 for holding the pair ofsecond support shafts 313; and a female threadedportion 315 attached to the holdingmember 314. - The advancing and
retracting mechanism 320 includes: adrive motor 321; adrive pulley 322 driven by thedrive motor 321; a drivenpulley 323; adrive belt 324 for transmitting a drive force of thedrive pulley 322 to the drivenpulley 323; and arotary shaft 325 which rotates about an axis line X2 together with the drivenpulley 323. - The advancing and
retracting mechanism 320 in this embodiment is a mechanism which can change over a state of the tube pump between a mounting state shown inFig. 1 where thetube 220, thefirst roller unit 10, and thesecond roller unit 20 are disposed at the same position on the axis line X1 and a separated state shown inFig. 12 where theholding mechanism 200 is disposed at the position separated from thedrive mechanism 100 by a distance. - The
drive motor 321 of the advancing andretracting mechanism 320 rotates in response to a control signal from thecontrol unit 400 thus rotating thedrive pulley 322. A drive force of thedrive pulley 322 is transmitted to the drivenpulley 323 through thedrive belt 324 thus rotating the drivenpulley 323 about the axis line X2. Therotary shaft 325 rotates about the axis line X2 together with the drivenpulley 323. - A male thread is formed on an outer peripheral surface of the
rotary shaft 325, and is fastened to the female threadedportion 315 of thehousing mechanism 310. Accordingly, when therotary shaft 325 rotates about the axis line X2, the female threadedportion 315 of thehousing mechanism 310 moves along the axis line X2. The female threadedportion 315 is connected with the holdingmember 314, the pair ofsecond support shafts 313, the pair offirst support shafts 312, and thehousing case 311. Therefore, when the female threadedportion 315 moves along the axis line X2, theentire housing mechanism 310 including thehousing case 311 moves along the axis line X2. - In newly mounting the
holding mechanism 200 on thetube pump 500, thecontrol unit 400 drives thedrive motor 321 of the advancing andretracting mechanism 320 thus bringing thetube pump 500 into the separated state shown inFig. 11 . Thereafter, an operator moves theholding mechanism 200 to thehousing case 311 of thehousing mechanism 310 while gripping theholding mechanism 200 so that theholding mechanism 200 is mounted on thetube pump 500. - As shown in
Fig. 12 andFig. 13 , thehousing case 311 includes aset plate 311a formed into a plate shape and acase body 311b. A pair ofhousing grooves 311c for housing the pair ofprojections 212 of theholding mechanism 200 are formed on thecase body 311b. The operator presses the back side of theholding mechanism 200 gripped by a hand of the operator to theset plate 311a and, thereafter, the pair ofprojections 212 of theholding mechanism 200 is housed in the pair ofhousing grooves 311c. With such operations, the operator can easily attach theholding mechanism 200 to thehousing mechanism 310. - The
holding mechanism 200 is attached to thehousing mechanism 310 as shown inFig. 12 . Thereafter, thecontrol unit 400 drives thedrive motor 321 so as to move thehousing mechanism 310 in the direction where thehousing mechanism 310 approaches thedrive mechanism 100 along the axis line X1. Therefore, thetube pump 500 is brought into a mounting state shown inFig. 1 where thetube 220, thefirst roller unit 10, and thesecond roller unit 20 are disposed at the same position on the axis line X1. - The description is made with respect to the manner of operation of the
drive mechanism 100 when theholding mechanism 200 is attached to thedrive mechanism 100 by theattachment mechanism 300. - In response to a control signal from the
control unit 400, thedrive mechanism 100 in this embodiment can perform a displacement control mode (first control mode) where thefirst roller unit 10 and thesecond roller unit 20 are rotated in the same direction so as to displace a liquid in thetube 220 using thefirst roller unit 10 and thesecond roller unit 20. - In the displacement control mode, as shown in
Fig. 9 andFig. 10 , at least either one of thefirst roller unit 10 or thesecond roller unit 20 is in contact with thetube 220 and hence, the replacement of theholding mechanism 200 cannot be performed. Further, when thefirst roller unit 10 and thesecond roller unit 20 are disposed at the position shown inFig. 9 andFig. 10 in a state where theholding mechanism 200 is not mounted on thedrive mechanism 100, thetube 220 cannot be inserted into a gap formed between the respective roller units and the innerperipheral surface 211 of thetube case 210. - Accordingly, the
drive mechanism 100 in this embodiment can perform a tube replacement mode (second control mode) in place of the displacement control mode in response to a control signal from thecontrol unit 400. - In performing the tube replacement mode where the above-described mounting state and separated state are changed over, the
control unit 400 fixes respective rotation angles of thefirst roller unit 10 and thesecond roller unit 20 so as to prevent thefirst roller unit 10 and thesecond roller unit 20 from coming into contact with thetube 220. The rotation angles at which thefirst roller unit 10 and thesecond roller unit 20 do not come into contact with thetube 220 are rotation angles shown inFig. 14 . -
Fig. 14 is a partially enlarged view of thedrive mechanism 100 shown inFig. 12 . InFig. 14 , the position where thetube 220 is disposed when theholding mechanism 200 is mounted on thedrive mechanism 100 is indicated by an imaginary line. As shown inFig. 14 , when thecontrol unit 400 performs the tube replacement mode, thefirst roller unit 10 and thesecond roller unit 20 retract so as to prevent a contact with thetube 220. - Upon receipt of an instruction to change over between the above-described mounting state and separated state from an operator, the
control unit 400 in this embodiment controls the advancing andretracting mechanism 320 and, at the same time, performs the tube replacement mode when a state of the tube pump is changed over from the separated state to the mounting state. Accordingly, in attaching theholding mechanism 200 to thedrive mechanism 100 using theattachment mechanism 300, it is possible to prevent a problem where thetube 220 comes into contact with thefirst roller unit 10 and thesecond roller unit 20. - In the description made heretofore, the
drive mechanism 100 can perform the displacement control mode and the tube replacement mode in response to a control signal from thecontrol unit 400. However, thedrive mechanism 100 may adopt another mode. For example, it may be configured such that thecontrol unit 400 is incorporated into thedrive mechanism 100, and thedrive mechanism 100 controls the rotation of thefirst roller unit 10 performed by thefirst drive unit 50 and the rotation of thesecond roller unit 20 performed by thesecond drive unit 60. - The description is made with respect to the manner of operation and advantageous effects which the above-described
tube pump 500 of this embodiment can acquire. - According to the
tube pump 500 of this embodiment, thedrive mechanism 100 includes thefirst roller unit 10, thesecond roller unit 20, thefirst drive unit 50, and thesecond drive unit 60. Accordingly, thefirst roller unit 10 and thesecond roller unit 20, which rotate while being in contact with thetube 220 held by theholding mechanism 200 in an arcuate shape about the axis line X1, can be independently rotated about the axis line X1. - According to the
tube pump 500 of this embodiment, theholding mechanism 200 is detachably attached to thedrive mechanism 100 by theattachment mechanism 300 so that thetube 220 can be easily replaced. - The
tube pump 500 of this embodiment includes thecontrol unit 400 for controlling thefirst drive unit 50 and thesecond drive unit 60. Thecontrol unit 400 can perform the displacement control mode (first control mode) where thefirst roller unit 10 and thesecond roller unit 20 are rotated in the same direction so as to convey a liquid in thetube 220, and the tube replacement mode (second control mode) where positions of thefirst roller unit 10 and thesecond roller unit 20 disposed about the axis line X1 are respectively fixed so as to prevent thefirst roller unit 10 and thesecond roller unit 20 from coming into contact with thetube 220. - According to the
tube pump 500 of this embodiment, by performing the tube replacement mode, thefirst roller unit 10 and thesecond roller unit 20 can be fixed so as to prevent a contact with thetube 220. Accordingly, in attaching theholding mechanism 200 to thedrive mechanism 100 using theattachment mechanism 300, theholding mechanism 200 can be easily and reliably attached to thedrive mechanism 100 while preventing thetube 220 from coming into contact with thefirst roller unit 10 and thesecond roller unit 20. Further, by performing the displacement control mode after theholding mechanism 200 is attached to thedrive mechanism 100 by theattachment mechanism 300, a liquid in thetube 220 can be conveyed. - In the
tube pump 500 of this embodiment, theattachment mechanism 300 includes: thehousing mechanism 310 for housing theholding mechanism 200; and the advancing andretracting mechanism 320 for advancing and retracting thehousing mechanism 310 along the axis line X1. The advancing andretracting mechanism 320 is a mechanism capable of changing over a state of the tube pump between the mounting state where thetube 220, thefirst roller unit 10, and thesecond roller unit 20 are disposed at the same position on the axis line X1 and the separated state where theholding mechanism 200 is disposed at the position separated from thedrive mechanism 100 by a distance. - According to the
tube pump 500 of this embodiment, theholding mechanism 200 which is housed in thehousing mechanism 310 is made to advance and retract along the axis line X1 by the advancing andretracting mechanism 320. With such a configuration, a state of the tube pump can be changed over reliably between the separated state and the mounting state while preventing thetube 220 from coming into contact with the roller unit. - In the
tube pump 500 of this embodiment, thecontrol unit 400 controls the advancing andretracting mechanism 320 so as to change over a state of the tube pump between the mounting state and the separated state, and thecontrol unit 400 performs the tube replacement mode in changing over the state of the tube pump from the separated state to the mounting state. - With such a configuration, in attaching the
holding mechanism 200 to thedrive mechanism 100, the tube replacement mode is performed by thecontrol unit 400 so that the roller units are fixed at the position where the roller units do not come into contact with thetube 220. Thereafter, the state of the tube pump is changed over from the separated state to the mounting state. Accordingly, in attaching theholding mechanism 200 to thedrive mechanism 100, an operator is required to perform only a relatively simple operation, that is, to house theholding mechanism 200 in thehousing mechanism 310. - The
holding mechanism 200 of this embodiment is detachably attached to thedrive mechanism 100 including thefirst roller unit 10 and thesecond roller unit 20 which rotate about the axis line X1 while being in contact with thetube 220 having elasticity. Further, theholding mechanism 200 includes: thetube case 210 on which the innerperipheral surface 211 is formed, thetube case 210 holding thetube 220 in an arcuate shape about the axis line X1; and the pair of fixingholes 213 for housing and fixing the pair oftube pressing rings 230 attached to the outer peripheral surface of thetube 220. The innerperipheral surface 211 is formed in a range larger than 180 degrees about the axis line X1. - According to the
holding mechanism 200 of this embodiment, the innerperipheral surface 211 of theholding mechanism 200 is formed in a range larger than 180 degrees about the axis line X1. Accordingly, when thetube 220 is disposed along the innerperipheral surface 211 of thetube case 210, thetube 220 comes into contact with the arcuate innerperipheral surface 211 of thetube case 210 with a distance longer than a half of a circumference of an arcuate shape of the innerperipheral surface 211. With such a configuration, when the roller units rotate about the axis line X1, a range where the roller units come into contact with thetube 220 increases. Therefore, along with the increase in such a range, an amount of a liquid which is sandwiched between the pair of roller units increases. The larger an amount of the liquid becomes, the more an increase amount of pressure of a liquid which can be increased by thetube pump 500 increases so that pulsing of a liquid can be properly controlled. - In the
holding mechanism 200 according to this embodiment, thetube case 210 is formed into a cylindrical shape, and one end of thetube case 210 in the direction of the axis line X1 is closed and the other end of thetube case 210 in the direction of the axis line X1 is opened. One end of thetube case 210 is closed so that a problem such as damage of thetube 220 carelessly caused by an operator can be suppressed. At the same time, the other end of thetube case 210 is opened so that theholding mechanism 200 can be attached to thedrive mechanism 100. - In the description made heretofore, the
attachment mechanism 300 is configured to move thehousing mechanism 310 along the axis line X1 by a drive force of thedrive motor 321. However, theattachment mechanism 300 may adopt another mode. For example, instead of using a drive force of thedrive motor 321, an operator may operate the advancing andretracting mechanism 320 so as to apply power to the advancing andretracting mechanism 320. - Further, for example, the advancing and
retracting mechanism 320 may not be provided, and theholding mechanism 200 may be directly attached to thedrive mechanism 100 using fastenings. Also in the above-mentioned case, thecontrol unit 400 performs the tube replacement mode so that it is possible to prevent a problem where thetube 220 comes into contact with thefirst roller unit 10 and thesecond roller unit 20 when theholding mechanism 200 is attached to thedrive mechanism 100.
Claims (5)
- A tube pump (500) comprising:a drive mechanism (100) including a pair of contact members (10, 20) configured to rotate about an axis line (X1) while being in contact with a tube (220) having elasticity, and a pair of drive units (50, 60) configured to cause the pair of contact members (10, 20) to rotate independently about the axis line (X1); anda holding mechanism (200) configured to hold the tube (220) in an arcuate shape about the axis line (X1);characterized in that the tube pump (500) further comprises an attachment mechanism (300) configured to detachably attach the holding mechanism (200) to the drive mechanism (100),in that the holding mechanism (200) is configured to be detachably attached to a drive mechanism (100) including a pair of contact members (10, 20) which rotate about an axis line (X1) while being in contact with a tube (220) having elasticity,in that the holding mechanism (200) comprises a holding portion (210) on which an inner peripheral surface is formed, the holding portion (210) holding the tube (220) in an arcuate shape about the axis line (X1); anda pair of fixing portions (213) configured to house and fix a pair of positioning members (230) attached to an outer peripheral surface of the tube (220),in that the inner peripheral surface is formed in a range larger than 180 degrees about the axis line (X1), andin that the holding portion (210) is formed into a cylindrical shape, and one end of the holding portion (210) in a direction of the axis line (X1) is closed and the other end of the holding portion (210) in the direction of the axis line (X1) is opened.
- The tube pump (500) according to claim 1, further comprising a control unit (400) configured to control the pair of drive units (50, 60), wherein
the control unit (400) is capable of performing a first control mode where the pair of contact members (10, 20) are rotated in the same direction so as to convey a liquid in the tube (220), and a second control mode where positions of the pair of contact members (10, 20) disposed about the axis line (X1) are respectively fixed so as to prevent the pair of contact members (10, 20) from coming into contact with the tube (220). - The tube pump (500) according to claim 2, wherein
the attachment mechanism (300) includes:a housing mechanism (310) configured to house and fix the holding mechanism (200); andan advancing and retracting mechanism (320) configured to advance and retract the housing mechanism (310) along the axis line (X1), whereinthe advancing and retracting mechanism (320) is a mechanism capable of changing over a state of the tube pump (500) between a mounting state where the tube (220) and the pair of contact members (10, 20) are disposed at the same position an the axis line (X1) and a separated state where the holding mechanism (200) is disposed at a position separated from the drive mechanism (100) by a distance. - The tube pump (500) according to claim 3, wherein
the control unit (400) is configured to control the advancing and retracting mechanism (320) so as to change over a state of the tube pump (500) between the mounting state and the separated state, and the control unit (400) is configured to perform the second control mode in changing over the state of the tube pump (500) from the separated state to the mounting state. - A holding mechanism (200) configured to be detachably attached to a drive mechanism (100) including a pair of contact members (10, 20) which rotate about an axis line (X1) while being in contact with a tube (220) having elasticity, the holding mechanism (200) comprising:a holding portion (210) an which an inner peripheral surface is formed, the holding portion (210) holding the tube (220) in an arcuate shape about the axis line (X1); anda pair of fixing portions (213) configured to house and fix a pair of positioning members (230) attached to an outer peripheral surface of the tube (220), whereinthe inner peripheral surface is formed in a range larger than 180 degrees about the axis line (X1),characterized in thatthe holding portion (210) is formed into a cylindrical shape, and one end of the holding portion (210) in a direction of the axis line (X1) is closed and the other end of the holding portion (210) in the direction of the axis line (X1) is opened.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2017025167A JP7004991B2 (en) | 2017-02-14 | 2017-02-14 | Tube pump and holding mechanism |
Publications (3)
Publication Number | Publication Date |
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EP3382202A2 EP3382202A2 (en) | 2018-10-03 |
EP3382202A3 EP3382202A3 (en) | 2018-12-19 |
EP3382202B1 true EP3382202B1 (en) | 2020-01-29 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18155218.3A Active EP3382202B1 (en) | 2017-02-14 | 2018-02-06 | Tube pump and holding mechanism |
Country Status (3)
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US (1) | US10746168B2 (en) |
EP (1) | EP3382202B1 (en) |
JP (1) | JP7004991B2 (en) |
Families Citing this family (10)
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JP6794199B2 (en) * | 2016-09-14 | 2020-12-02 | サーパス工業株式会社 | Tube pump system and its control method |
JP7004991B2 (en) * | 2017-02-14 | 2022-01-21 | サーパス工業株式会社 | Tube pump and holding mechanism |
JP7080472B2 (en) * | 2018-03-19 | 2022-06-06 | サーパス工業株式会社 | Tube pump system and its control method |
JP7221522B2 (en) | 2019-02-15 | 2023-02-14 | サーパス工業株式会社 | Tube pump system and its control method |
JP7326098B2 (en) * | 2019-09-30 | 2023-08-15 | 富士フイルム株式会社 | Endoscope liquid delivery device, liquid delivery tube and liquid delivery device body |
JP7480982B2 (en) | 2020-01-31 | 2024-05-10 | サーパス工業株式会社 | Tube Pump |
JP7480988B2 (en) | 2020-05-26 | 2024-05-10 | サーパス工業株式会社 | Tube holding member and tube pump |
JP7461639B2 (en) | 2020-05-26 | 2024-04-04 | サーパス工業株式会社 | Tube Pump System |
DE102020206875A1 (en) * | 2020-06-03 | 2021-12-09 | B.Braun Avitum Ag | Peristaltic pump for a device for extracorporeal blood treatment |
US20230175499A1 (en) * | 2021-12-07 | 2023-06-08 | Medtronic Xomed, LLC | Surgical devices and systems facilitating fluid management |
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Also Published As
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JP2018131946A (en) | 2018-08-23 |
EP3382202A2 (en) | 2018-10-03 |
JP7004991B2 (en) | 2022-01-21 |
EP3382202A3 (en) | 2018-12-19 |
US20180230987A1 (en) | 2018-08-16 |
US10746168B2 (en) | 2020-08-18 |
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